50cc P-51B Mustang ARF-QB (Quick Build)

Transcription

1 50cc P-51B Mustang ARF-QB (Quick Build) ASSEMBLY MANUAL AEROWORKS 4903 Nome Street, Denver, CO Phone Fax info@aero-works.net Copy write Protected All Rights Reserved by Aeroworks Inc. 1

2 TABLE OF CONTENTS Page Aeroworks Contact Information. 3 Introduction... 4 Kit Contents 5 Items Needed To Complete... 8 Tightening and Re-shrinking The Covering.. 9 Check Seams and Overlaps for Good Seal. 11 Wing Assembly Stab and Elevator Assembly.. 23 Rudder and Rudder Servo Installation Tail Wheel Steering 27 Rudder Pull-Pull Assembly. 32 Engine Installation Throttle/Choke Installation 38 Ignition Installation.. 45 Fuel Tank Installation Air Fill Valve Installation.. 54 Air Scoop Installation 56 Radio Installation Cowl Installation. 66 Spinner and Prop Installation 71 Decal Installation Preflight Preparation. 77 Drop Tanks and Drop Bombs Installation.. 79 Center of Gravity (C.G.) Control Throws Control Throw Deflection Table

3 4903 Nome Street Denver, CO Phone: (303) Fax: (303) Website: Tech Support: Thank you for choosing the Aeroworks 50cc P-51B Mustang ARF-QB. We put great effort into making this plane the best model you will ever build and fly. We have provided you with the highest quality kit and performance possible. We wish you great success in the assembly and flying of your new Aeroworks 50cc P-51B Mustang ARF- QB. Please note that some construction pictures will show the 50cc P-51D Mustang, these steps are identical for the 50cc P-51B Mustang.!WARNING! An R/C aircraft is not a toy! If misused, it can cause serious bodily harm and property damage. Fly only in open areas, and AMA (Academy of Model Aeronautics) approved flying sites. Follow all instructions included with your plane, radio, and engine. Aeroworks manufacturing guarantees this kit to be free from defects in both material and workmanship at the date of purchase. This limited warranty does not cover any component parts damaged by use or modification. In no case shall Aeroworks liability exceed the original cost of the purchased kit. Further, Aeroworks reserves the right to change or modify this limited warranty without notice. In that Aeroworks has no control over the final assembly or materials used for final assembly, No liability shall be assumed nor accepted for any damage resulting from the use by the user of the final user-assembled product. By the act of using the userassembled product, the user accepts all resulting liability. We, as the kit manufacturer, have provided you with a top quality, thoroughly tested kit and instructions, but ultimately the quality and fly ability of your finished model depends on how you build it; therefore, we cannot in any way guarantee the performance of your completed model, and no representations are expressed or implied as to the performance or safety of your completed model. 3

4 INTRODUCTION Your new 50cc P-51B Mustang ARF-QB is a high quality scale aircraft. The aircraft builds easily, quickly, and precisely due to its state of the art CAD design, LASER cut technology, and high quality included hardware. We hope you enjoy building and flying your 50cc P-51B Mustang ARF-QB. Great care has been taken in both the design and manufacturing of the 50cc P-51B Mustang ARF-QB to allow for the strongest and lightest construction possible. Only the highest quality materials from the covering, paint, wood and hardware have been used in the construction of this model. The 50cc P-51B Mustang ARF-QB has been individually hand built, covered and painted by trained and experienced craftsmen with over 25 years of manufacturing experience. Using CAD design, laser cut technology and jig-built assures accuracy in all stages of production. The 50cc P-51B Mustang ARF-QB is designed for gas engines in the 50cc category. The Desert Aircraft DA-50cc engine is shown in the assembly instructions. The aircraft was tested with the DA-50cc and has outstanding performance. The final choice of engine is left up to the builder. However other 50cc engines may not fit the cowl or engine box design and some modification may be necessary. A computer radio is recommended to allow the pilot to take full advantage of this aircraft. IMPORTANT Please read through this manual carefully, before starting the assembly of your new 50cc P-51B Mustang ARF-QB. Inventory and inspect all parts and hardware for any imperfections or damage. Notify Aeroworks immediately if there are missing or damaged parts. INTENDED USE This plane should not be regarded as a toy. This is high performance scale aircraft and is recommended for pilots who are beyond the trainer-stage and are comfortable with flying a high performance scale aircraft. READ LIMITED WARRANTY READ It is important to notify Aeroworks of any damage or problems with the model within 30 days of receiving your airplane to be covered under warranty. If you wish to return this aircraft for any reason a 15% restock fee will be charged to the customer. In addition the customer is responsible for all return shipping cost and all prior shipping cost will not be refunded. Parts will be exchanged or replaced once the original item is returned at the owner s expense. If you have any problems, please contact Aeroworks. Aeroworks cannot insure the skill of the modeler and can not influence the builder during the construction or use of this aircraft, and therefore, will not be accountable for any property damage, bodily injury or death caused by this aircraft. Aeroworks cannot insure the skill of the modeler and can not influence the builder during the construction or use of this aircraft, and therefore, The purchaser/operator accepts all responsibility of any and all structural or mechanical failures. 4

5 KIT CONTENTS 50cc P-51B Mustang Materials List BASIC AIRCRAFT PARTS: Fuselage with pre-installed vertical fin covered, firewall fuel-proofed, (6) 4-40 blind nuts installed for the mounting of cowling (2) 6.35mm blind nuts installed for the mounting of wings (4) 6-32 blind nuts installed for the mounting of tail wheel (1) Engine box top hatch cover with AW logo installed by (4) T2.6x8mm PWA screws (2) Tail Wheel Gear Doors installed (1) Tail Wheel installed in the fuse (2) Fiberglass Wing Fillets Left and Right, painted and glued on the fuse Canopy system painted and installed (1) Cockpit and panel painted and installed Left Wing with Aileron, Flap covered: Pre-drilled for the mounting of the control horns (6) 6-32 blind nuts installed for the main retracts mounting (2) 4-40 blind nuts installed for the mounting fuel tank and bomb pedestal (5) pin point hinges glued for aileron (5) pin point hinges glued for flap (1) front locater pin installed (1) Plywood Wing Bolt mounting pad covered and glued (2) Dummy Guns vacuumed and glued (2) aileron and flap servo hatch cover installed by (8) T2.6x8mm wood screws (1) main landing gear hatch cover installed by (4) T2.6x8mm wood screws 5

6 Right Wing with Aileron, Flap covered: Pre-drilled for the mounting of the control horns 6-32 blind nuts installed for the main retracts mounting (2) 4-40 blind nuts installed for the pedestal of fuel tank and bomb mounting (5) pin point hinges glued for aileron (5) pin point hinges glued for flap (1) front locater pin installed (1) Plywood Wing Bolt mounting pad covered and glued (2) Dummy Guns vacuumed and glued (2) aileron and flap servo hatch cover installed by (8) T2.6x8mm wood screws (1) main landing gear hatch cover installed by (4) T2.6x8mm wood screws Horizontal Stabilizer with elevator assembly with (10) pin point hinges (glued)---covered Elevators Pre-drilled for the mounting of the control horns Rudder with (5) pin point hinges (not glued) covered Rudder Pre-drilled for the mounting of the control horns SUB ASSEMBLIES: #1: #2: #3: Main Retractable Gears system installed in the wing 110mm dia. rubber main wheels with aluminum hub pre installed Pneumatic System for retracts pre installed Air Tank, Air Lines, Air Valves, Electronic Sequencer, (2) mini servos for sequencer #4: Retractable Tail Wheel pre installed Rubber tail wheel with aluminum hub pre installed #5: (1) Fiberglass Cowling w/ inside ring glued painted with (6) bolt holes drilled and Bolt inserts preinstalled (6) 4-40x16mm hex style bolts for mounting cowling #6: (1) Bottom Air Scoop painted with (2) holes drilled for the wing bolts to go through (2)12.5x95mm fiberglass tubes for the wing bolts guides (1) Template for marking location of bottom air scoop (1) Bottom Front Fuse Fillet - painted #7: (2) Mounting Pedestal for bomb and tank fiberglass painted and preinstalled 4-40 blind nuts (2) Dummy Bombs fiberglass painted with bolt holes drilled (2) Dummy Tanks fiberglass painted with bolt holes drilled (4) 4-40x16mm hex head bolts for pedestal mounting (4) 3mm split ring lock washers for pedestal mounting (4) 3mm flat washers for pedestal mounting (4) 4-40x16mm Hex Style head bolts for bombs or tanks mounting (4) 3mm split ring lock washers for bombs or tanks mounting (4) 3mm washers for bombs or tanks mounting #8: (4) 4-40x2-1/2 right hand and left hand threaded pushrods with nuts for ailerons and flaps (2) 4-40x3 right hand and left hand threaded pushrod with nuts for elevators (1) Wrench for the right hand and left hand threaded pushrod (2) 4-40x300mm Threaded Pushrods (2) 4-40 solder coupler with nuts (2) 4-40 Metal Clevises (14) 4-40 ball links (14) 4-40x16mm hex style bolts (14) 4-40 lock nuts (8) Brass Spacers (14) 3mm flat washers #9: (2)1x1100mm plastic coated pull-pull steel cable for rudder (2)1x750mm plastic coated pull-pull steel cable for tail wheel steering preinstalled to tail wheel steering arm tiller (6) 4-40 Ball links (6) 4-40x16mm hex style bolts (6) 4-40 lock nuts (4) 3mm flat washers (6) Threaded Couplers (6) Brass Swags (8) AL Double Control Horns (24) T2.6x16mm ailerons and flaps Control Horn Mounting Screws (24) T2.6x8mm rudder and elevator control horn mounting screws #10: (1) 750cc Gas Fuel Tank Assembly (2) Brass Barbs for fuel line (2) Fuel filler Dot 1 male and 1 female 6

7 #10: (24) 6.35mm aluminum engine stand offs. #11: (2) Aluminum stabilizer tubes 383mm; 176mm anodized black (4) 4-40x16mm hex style head bolts for stab mounting (4) #6 bonded washers for stab mounting (4) 3mm split ring lock washers for stab mounting #12: (1) 300x300mm Midnight Blue Covering (1) 300x300mm Silver Covering (1) 300x300mm White Covering (1) 300x300mm Black Covering #14: Manual CD #15 (1) Throw Meter 7

8 ITEMS NEEDED TO COMPLETE Hardware: 50 CC Gas engine and ignition Pitts style muffler-custom Muffler-JTEC DA 50WPTF RECOMMENDED Engine mounting bolts, and washers. Propeller of choice 2 x aileron servos (min 180 in./oz. Torque, Digital, Metal geared) Rec. HS7985-MG 2 x Flap servos (min 180 in./oz. Torque, Digital, Metal geared) Rec. HS7985-MG 1 x rudder servo (min 180 in./oz. Torque, Digital, Metal geared) Rec. HS7985-MG 2 x elevator servos (min 180 in./oz. Torque, Digital, Metal geared) Rec. HS7985-MG 1 x throttle servo (Fast/Reliable) Rec. HS5645- MG 1 x choke servo (Fast / Reliable) Rec. HS5645- MG Servo extensions 8 x 6, 2 x 24, 2 x 36 1 x 12 channel receiver ( PCM/2.4GHz recommended) 1 x receiver battery (min 6.0 volt / 1700ma) 1 x ignition battery (min 4.8 volt / 1700ma) 2 x switches with charge jacks Tools: Allen wrenches US and Metric. Dremel cutting disc and sanding drum tool Electric drill and selection of bits Razor saw Flat head screwdriver Hobby heat gun Hobby iron and covering sock Masking tape Modeling knife Needle nose pliers or crimping tool Paper towels Pen, pencil or felt tipped marker Phillips screwdriver Rubbing alcohol Ruler and tape measure Scissors T pins Waxed paper/suran Wrap Wire Cutters Adhesives: Minute epoxy Blue Loctite Epoxy mixing cups, mixing sticks, brushes CA kicker (optional) Thick, Thin and Medium CA Rubbing alcohol Wipes WARNING Some rubbing alcohols may attack painted parts. 8

9 TIGHTENING AND RE-SHRINKING THE COVERING 1. Excessive heat from covering irons or heat guns can cause the canopy to melt or warp. Take care not to apply excessive heat to front section of canopy 3. Using your covering iron with a soft sock, gently apply pressure and rub in the covering. If any bubbles occur, your iron may be to hot. Reduce heat and work slowly. 2. Open your kit slowly and take care not to damage any parts of the kit. Remove all parts from their plastic protective covers for inspection. Before doing any assembly or installation of any decals it is very important to re-shrink or retighten the already applied covering. Due to the shipping process, heat and humidity changes from different climates, the covering may become lose and wrinkle in the sun. If you take the time to re-tighten the covering, you will be rewarded with a long lasting beautifully covered model. 4. If bubbles persist, use a small pin to punch holes in the bubble to relieve trapped air and reheat. 9

10 5. Use your heat gun and iron with extreme caution. Take care not to apply too much heat to one area for long periods of time. This may cause the trim colors to over shrink and pull away leaving unsightly gaps on the color lines. The trim stripes are especially vulnerable to over shrinking. 6. Your model is covered with Ultracote covering. In case of repairs, the colors are: Princess Elizabeth Scheme Midnight Blue #885 Silver #881 Black #886 White #870 Tightening and re-shrinking the covering is now complete. However, this is a never ending process and should be checked after each flying session. 10

11 CHECKING SEAMS AND COLOR OVERLAPS FOR GOOD SEAL 1. Go over all seams and color overlaps with your sealing iron. Note: Even if your models covering has no wrinkles out of the box it is still very important to go over all seams and overlaps to make certain they are sealed securely. This is especially important at the leading edges of the wings and stabs. We recommend checking the covering after each flying session. 3. If wrinkles occur near the hinge lines use a covering iron with a sock on a low heat setting. Be careful not to apply to much heat to the fiberglass fairing covering the hinge line. To much heat in this area can cause the fiberglass to warp. Be careful not to apply to much heat to the fiberglass fairing covering the hinge line. 2. Use your covering iron to ensure all edges, seams, and color overlaps are securely sealed. IMPORTANT: It is the responsibility of the purchaser / operator to check the covering seams and overlaps for security and a good seal. Aeroworks is not responsible for failure of covering seams or overlaps during flight. Note: If covering continues to lift apply a small amount of thin CA underneath the covering. Then using a clean rag apply pressure to secure. One of the most important tools in your flight box is a roll of clear tape. This can be used at the field for fast and easy repairs of the covering. Then once you have finished flying the covering can be permanently repaired. 11

12 WING ASSEMBLY Aileron/Flap Servo Installation 1. Gather the aileron and flap servos, (8) servo mounting screws, (4) servo mounting blocks, (2) Wood screws to secure servo mounting blocks (1) 6 Servo extension,(1) 24 Servo extension (2) 1 1/4 Servo arms and (2) Aeroworks safety clips as shown below. 3. Mark the center of the servo arm exit slot as shown. This will aid in aileron servo alignment. Note: The ailerons and flaps have been pre-hinged and glued to the wing panels and are ready for flight. No other steps are necessary for hinging. 4. Align the center of the servo arm to the reference mark made in the previous step. Place servo mounting blocks next to servo and mounting plate. 2. Remove the four screws holding the aileron servo mounting plate to the wing as shown. 12

13 5. Place the servo on a flat surface as shown, this will ensure correct placement of the servo onto the blocks. Use a C-clamp to hold the servo mounting blocks to the servo. 7. Install servo with servo mounting screws. Repeat servo installation process for all aileron and flap servos. 6. Drill holes for servo mounting screws. Either an electric drill or a manual hand drill will work well in these steps. 8. Use a pencil to mark the location of the servo mounting blocks as shown. This will aid in correctly positioning the mounting blocks when gluing blocks to mounting plate. Note: We recommend the Great Planes Dead Center tool Part # GPM

14 9. Apply 30 minute epoxy to the mounting blocks as shown, be careful not to get epoxy onto the servo itself. 11. Drill small hole through mounting plate and into mounting blocks. Use provided mounting screws to help secure the mounting block to the mounting plate as shown. 12. Repeat process for the remaining 3 wing servos. 10. Use a C-clamp to hold the servo mounting blocks to the servo mounting plate. Note: Use two pieces of thin plywood to protect the servo mounting plate and servo from being damaged by the C-clamp. 13. Layout the servos with servo extension attached. One 24 extension will be used for the aileron servo and one 6 extension will be used for the flap servo. Use an Aeroworks Safety Clip to ensure the plugs will not come apart from vibration or light tension. 14

15 14. Remove the balsa stick with the pull string from the servo well and tie the pull string to the servo lead as shown. Secure with tape so that the string pulls from the front end of the connector to assist in drawing the servo wire through the wing without hanging up inside the wing. 16. Pull the flap servo extension out the root end of the wing using the same steps described for the aileron extension. Note: The aileron and flap leads will exit through a hole in the top of the wing, secure with tape as shown. 15. Pull the aileron servo lead through the root end of the wing. 17. Plug the servo into the receiver and turn on. Ensure servo is centered and the servo arm is centered in the cutout. Take advantage of servo programmers and match boxes available today to achieve best results. This will help keep servos from binding and causing possible aileron flutter. Note: On metal geared servos use Loctite for all Servo arm mounting screws. 15

16 18. Re-install the four screws holding the aileron servo mounting plate to the wing as shown. Repeat process for remaining aileron and flap servos. 2. Assemble the pushrod and control horn assembly as shown. The ball link goes between the left and right sides of the control horn sides and is secured with a nylon lock nut. We recommend mounting the ball link in the center hole of the control horn. Aileron/Flap Control Linkage Installation 1. Gather the aileron control linkage parts as shown below. There are (2) /2 pushrods, (4) 4-40 ball link assemblies, (2) Flat washers (2) brass spacers, (2) left and (2) right side control horns, (1) Adjustment wrench and (12) wood screws for each wing panel. 3. Align the control horns over the factory drilled holes. 16

17 4. Use thick CA on each screw prior to installing to lock screws in place 6. Correct installation of ball link, flat washer and brass spacer to servo arm shown below. Note: CA glues have a fast drying time. Remember to work quickly 4-40 Bolt Flat Washer Brass Spacer Lock Nut Note: Flat washer prevents ball link from coming off brass ball. 5. Align the left and right sides of the control horns to the mounting holes and secure using six wood screws as shown. 7. Install ball link to servo arm as shown below. Repeat process for other aileron and flap control horn, and pushrod installation. 17

18 8. Plug the servo into the receiver and turn radio on. Ensure the servo trim and sub trim is centered. Adjust the length of the pushrod so that the control surface is in the natural position. 10. Correct flap pushrod installation shown below, the servo arm should be approximately 45 degrees to the wing as shown Finished wing panel assembly shown below. 9. Correct aileron pushrod installation shown below, the servo arm should be 90 degrees to the wing as shown. 12. It is recommended to remove the inner gear doors at this time to ensure they will not be damaged while checking landing gear operation

19 13. Attach the airlines to their respective connectors and pump the system with air ( 100PSI MAX). This will be your last time to check for air leaks in the retract system before the wings are joined. Caution: Manually operate gear and gear door valves to ensure the valves do not leak. Take care not to crush inner gear doors with gear when testing. We recommend removing inner doors during testing and assembly. Wing Panel Assembly Gather the wing joining supplies shown below: 30 or 45 Minute Epoxy-Not Supplied Mixing Cup/Sticks-Not Supplied Nylon Zip Ties-Supplied Tightening Dowels-Supplied Plywood Wing Joiner-Supplied 14. Also check for proper operation of the retractable tail-wheel assembly and doors at this time. 1. Mark the wing joiner as shown below. This will aid in correctly positioning the wing joiner when gluing. Note: It is best to check air system at this time before going forward with any further assembly. 19

20 2. Dry fit the wing as shown below, light sanding of the wing joiner may be required for a perfect fit. 4. Spread an even amount of 30 Minute Epoxy on the wing root as shown. Note: Pull air lines and servo extension clear and secure with tape to prevent accidental gluing. 3. Spread an even amount of 30 Minute Epoxy inside of the wing joiner slot in each wing as shown. 5. Evenly spread epoxy over the left half of the wing joiner brace as shown below. 20

21 6. Slide the wing joiner into the slot of the left wing panel as shown below. 8. Slide the right wing panel onto the wing joiner and press firmly against left wing panel. 7. Evenly spread epoxy over the right half of the wing joiner brace and over opposite wing root rib as shown below. 9. Use a Zip-Tie around the front lactation dowels to hold the wing in position while the Epoxy cures. 21

22 10. Slide the included wing tightening dowels into the holes drilled for the wing mounting bolts as shown below. Attach a Zip-Tie around the dowels as shown, do not fully tighten until the next step. 12. Use Rubbing alcohol to wipe away any excess epoxy that has gotten onto the wings surface during assembly Let the wing set until the glue is fully cured. 11. Attach a Zip-Tie to the lower wing tightening dowels as shown below. Evenly tighten both the upper and lower ties making sure that the wing stays aligned. Note: Make sure wings are aligned at both the leading edge and trailing edge. 22

23 STAB AND ELEVATOR ASSEMBLY Elevator Servo Installation 1. The elevators have been pre-hinged and glued to the stabs and are ready for flight. No other steps are necessary for hinging. 2. Slide servo into the opening of the stab. The servo output shaft should face the leading edge of the stab. You will need the following items: (2) Servos with mounting screws (2) 1 1/4 Servo arms (2) 36 Servo Extensions (2) Aeroworks Safety Clips Note: 36 servo extension will be used to connect servos to receiver during a later step. 3. The servo should fit in the servo opening as shown below, if necessary sand the opening slightly if the servo is a tight fit. 1. Elevator servo is installed in the root end of the elevator. We have precut a slot in the mounting rail for the servo lead to fit into. Note: Make sure servo lead is not binding or crimped. This may cause the wire to be cut. 23

24 4. Use a pin drill to drill the four servo mounting holes as shown below. Note: We recommend the Great Planes Dead Center tool Part # GPM Following same steps as used in the wing assembly assemble pushrods to horns. Align the control horns over the factory drilled holes. We recommend installing ball link to center hole of control horn. 5. Install servo with servo mounting screws as shown below. 7. Use thick CA on each screw prior to installing to lock screws in place Note: To ease screw installation we recommend using a magnetic screw driver, this will hold screw to the head of screw driver while it is installed. Note: CA glues have a fast drying time. Remember to work quickly 24

25 8. Align the left and right sides of the control horns to the mounting holes and secure using six wood screws as shown. 9. Correct elevator pushrod installation shown below, the servo arm should be 90 degrees to the stab as shown

26 RUDDER AND RUDDER SERVO INSTALLATION Rudder Installation 1. Gather the rudder, hinges, epoxy, Vaseline, stir sticks, mixing cup and alcohol as shown. Use minute epoxy to ensure adequate working and cleanup time. 3. Mix epoxy in mixing cup and use a tapered stick to apply the epoxy inside the pre-drilled holes in the trailing edge of the fin. Apply epoxy to one side of each hinge and insert the hinge completely into the hole. Note: Dry fit the hinges and rudder prior to gluing hinges. This will ensure correct installation of rudder and hinges. 2. Prep all hinges for installation by applying Vaseline petroleum jelly or light oil to the hinge joint. This ensures no epoxy gets into the hinge during assembly. 4. Ensure the hinge axis is vertical and parallel to the trailing edge of the fin before epoxy cures. Wipe away excess epoxy with alcohol wetted wipes. Epoxy the hinges into the fin first and allow epoxy to fully cure. Note: Ensure you have free and full travel of each hinge. 26

27 TAILWHEEL STEERING 5. Mix epoxy in mixing cup and use a tapered stick to apply the epoxy inside the pre-drilled holes in the leading edge of the rudder. Apply epoxy onto each hinge. Horns, Servo and Pull-Pull Cable Installation 1. Gather the rudder control linkage parts shown below. (2) Rudder cables (6) 4-40 ball links with hardware (4) Flat washers (6) threaded couplers (6) brass swaging tubes (2) left control horns (2) right control horns (12) wood screws 6. Carefully slide the rudder onto each hinge and against the trailing edge of the fin. Wipe away excess epoxy with alcohol wetted wipes. Note: Insure rudder moves freely to max throw before glue dries. 27

28 2. Gather the following items for the rudder servo installation: Rudder Servo 2 1/2 Servo Arm (Double Servo Arm) Servo mounting screws Aeroworks Safety Clips 4. The cables should allow the tail wheel to move freely in either direction. Note: Check steering cables are securely mounted to tail wheel steering arm. 3. The Pull Pull Cables for the tail wheel steering have been installed at the factory and taped to the servo floor as shown below. Remove the tape and test the cables to make sure they are securely attached at the tail wheel steering tiller arm. 5. Install the rudder servo, the output shaft should face the front of the fuse as shown. 28

29 6. Install the 4-40 ball link onto the threaded coupler as shown below. 8. Thread the brass swag tube onto the steering pull pull cable. 7. Tip: Use a hobby knife to remove the burrs from the brass swaging tube as shown below. This will allow the pull pull cables to pass through with ease. 9. Thread the threaded coupler onto the steering pull pull cable. 29

30 10. Temporally install the ball link onto the rudder servo arm as shown and adjust cable length to remove excess slop. 12. Pull cable tight and thread cable back through the brass swage tube as shown. 11. Ensure that the tail wheel is straight when the rudder servo arm is 90 degrees to the servo case. 13. Loop the cable back through the brass swage tube and pull tight as shown. 30

31 14. Crimp the brass tube with a crimping tool or pliers. 16. A drop of thin CA may be applied to the swage tube to help secure the cable. 15. Cut off excess cable as shown. 17. Repeat the steps for the other tail wheel steering pull pull cable. Install the cable ball links to the inside holes and on top of the servo arm as shown below. Note: Insure the pull pull cables are not overly tight as this can prevent the tail wheel from locking into place. Their should be a slight amount of play when the tail wheel is in the up position. 31

32 RUDDER PULL-PULL INSTALATION 18. Install the servo arm onto the rudder servo as shown below. Tail wheel steering is now complete. 1. Gather the rudder control linkage parts shown below. (2) Pull pull cables (2) Threaded couplers (2) 4-40 Ball links (2) Brass swaging tubes Assemble threaded coupler and ball link at one end of each cable. 2. Slide opposite end of pull pull cables into the outer guide tubes from the radio compartment as shown. 32

33 3. Feed the cables through the rear guide tube as shown. The guide tube has been removed near the tail wheel to allow for proper operation of the tail wheel. 5. Gather the rudder control horn parts shown below. (2) left control horns (2) right control horns (12) wood screws. (2) 4-40 ball links with hardware Assemble ball links to control horns. It is recommended that the center hole be used on the horns 4. Pull the cable out the rear of the fuse as shown. Tip: Tape the pull pull cable to the side of the fuse to keep if from falling back inside fuse. 6. Screw the threaded coupler into the ball link as shown below. 33

34 7. Align the control horns over the factory drilled holes. 9. Align the left and right sides of the control horns to the mounting holes and secure using six wood screws as shown. 8. Use thick CA on each screw prior to installing to lock screws in place 10. Install the other rudder control horn using the same method as before. Note: CA glues have a fast drying time. Remember to work quickly 34

35 11. Tape the rudder to the top edge of the vertical fin in the neutral position as shown. This ensures the rudder is straight when the cables are attached. 13. Install rudder pull pull cables to the control horns using the same method used for the tail wheel. 14. Rudder installation is now complete. 12. Plug the rudder servo into the rudder channel of the receiver and power up. Turn on transmitter to center rudder servo. Install rudder ball links to servo arm. 35

36 ENGINE INSTALLATION Engine Installation 1. Align cowl to fuse and bolt in place attach masking tape to bottom of fuse Mark the location of the panel lines from the cowl onto the fuse. This step will help with proper alignment of the template material during the cowl installation steps shown later in this manual (Page Locate the laser cut engine mounting template for the DA-50. Note: If other engines are used a universal template has been provided to fit your engine selection. Follow the next steps for making your Engine template to match your engine. Note: If other then the DA50 is used for final assembly the engine may not fit inside the cowl and some modification may be necessary. 2. The 50cc P-51B was designed around the DA 50 Illustrations for a DA-50 installation are provided below. Gather the engine, and mounting hardware as shown below. Note: 2 1/2 Standoffs are required for the DA 50 Note: Engine mounting hardware is Not Supplied The correct distance from the firewall to the front of the prop hub is: 6 13/16 Note: Custom J-Tec muffler (Part # DA50WPTF) was used on this model and will fit perfectly inside of the cowl. 4. Center your engine over the laser marked thrust lines on the universal template. 36

37 5. Mark the engine mounting hole locations for your engine. 7. Align template to firewall and tape template securely in place. 6. Drill the engine mounting hole locations for your engine. Follow DA 50 Installation to mount engine. 8. Use a 1/4 drill bit to drill the engine mounting holes in firewall. After drilling is finished, remove template from firewall. 37

38 9. Using mounting bolts and flat fender washers mount engine to firewall. Tighten the bolts evenly to prevent crushing of the firewall. Throttle/Choke Servo Installation 1. Gather the throttle servo, choke servo and pushrod parts: (2) 4-40 metal rod threaded at one end (4) 4-40 ball links and hardware (4) Brass spacers (2) 4-40 threaded solder couplers (4) Flat washer 10. Engine installation is now complete, insure that the distance from the fire wall to the prop hub is 6 13/16 as shown below. 2. Gather the throttle and choke servo mounting trays as well as the balsa mount riser as shown below. 6 13/16 38

39 3. Drill a hole through the firewall to allow the throttle linkage to pass through and connect to the carburetor. 5. Remove the engine in order to enlarge the throttle and choke pushrod holes as shown. 4. Drill a second hole through the firewall to allow the choke linkage to pass through and connect to the carburetor. 6. Enlarge the holes in the firewall as shown below, this will allow the pushrod to pass through the firewall without binding. 39

40 Choke Servo Installation 1. Install a 4-40 ball link onto the 4-40 pushrod as shown below. 3. Assemble the choke servo arm as shown below. The ball link should be on the bottom of the servo arm. 2. Slide the pushrod through the firewall and attach to the choke lever on the carb as shown below. 40

41 4. Install the choke servo onto the servo mounting tray using servo mounting screws as shown below. 6. Spread an even amount of 5 Minute epoxy on the servo mount where it will be glued to the fuse. 5. With the servo arm on servo check alignment of push rod to back ball link. Use pencil to mark the correct position of the servo mount. 7. Reinstall the servo mount as shown using the alignment marks made in a previous step. Allow the glue to fully cure before continuing. 41

42 8. With the servo arm centered and the choke arm centered, measure and mark the end of the choke pushrod wire that will be inserted into the threaded coupler as shown. 10. Gather the soldering tools as shown below. Note: For best results we recommend a high quality Silver Solder like Sta-Brite silver solder. 9. Cut the choke pushrod to the correct length as marked in the previous step. 11. Solder the threaded coupler to the choke pushrod wire. Note: Lightly sand end of rod for best bond 42

43 12. Attach the choke pushrod with the 4/40 ball links and secure. Power up the receiver and choke servo and adjust pushrod for proper operation. Ensure the servo or rod does not bind or jam at closed or full open positions. 2. Attach the throttle pushrod with the 4/40 ball links to the throttle arm on the carb as shown below. Throttle Servo Installation 1. Bend the throttle pushrod as shown below. 3. Spread thick CA on the back side of the throttle servo mount balsa riser as shown. 3 3/4 Threaded

44 4. Glue the throttle servo mount riser to the fuse side as shown below. 6. Install the servo mount as shown aligning servo to throttle pushrod, allow the glue to fully cure before moving on to the next step. 5. Spread an even amount of 5 Minute epoxy on the servo mount where it will be glued to the fuse. 7. Using the same method as described for the choke linkage solder the threaded coupler onto the throttle linkage and install as shown below. Note: Ensure throttle linkage will not interfere with fuel tank. 44

45 IGNITION INSTALATION 1. Gather the ignition module, ignition battery, regulator, switch, and mounting hardware as shown. 4. Route the nylon ties through the holes drilled in the previous step as shown below. 2. Position the ignition module outside the engine box ensure spark plug lead connects to the engine without excess tension or chafing. Mark the location for the nylon tie mounting holes. 5. Roll the supplied foam rubber to make a 4 layer pad as shown. Make the pad slightly larger than the ignition module. 3. Use a 1/4 drill bit to drill the nylon tie mounting holes. 45

46 6. Install the ignition module and the foam pad with a nylon ties as shown. 8. Gather the ignition regulator as shown. Note: We used a Pin and Flag Switch to aid in the scale appearance of the airplane. These items can be purchased directly from Aeroworks. 7. Install the ignition battery using the foam pad with a nylon tie as shown. 9. Install the ignition regulator as shown below. Follow the regulator manufacturers directions for specific regulator mounting instructions. 46

47 10. Drill a hole for the ignition switch as shown below. 12. Ignition installation is now complete. 11. Install the ignition switch as shown below. Follow the switch manufacturers directions for specific switch mounting instructions. 47

48 FUEL TANK ASSEMBLY AND INSTALLATION Fuel Tank Assembly 1. Gather the fuel tank parts as shown below. A 750cc (26oz) fuel tank has been provided. 3. Assemble the fuel pick up line, rubber stopper and metal end caps. As shown below. Note: Fuel line is not provided but can be purchased from Aeroworks 2. Locate the (2) supplied brass fuel barbs. Solder a brass fuel barb to the fuel line pick up tube. This will keep the weight of the fuel clunk from pulling the fuel line off the brass tube. 4. Solder a brass fuel barb to the other end of the fuel pick up line. Note: No brass barbs are required for the air vent lines. 48

49 5. Final assembly of rubber fuel stopper with fuel pick up tube shown below. 7. Install the fuel tubing and clunk. Secure the fuel tubing with nylon ties to the pick-up tube and clunk. 6. Install air vent tube into rubber stopper and bend upward. Air vent tube should rest as close to the top of fuel tank as possible. Without touching the top of the tank. 8. Insert the rubber stopper assembly into the tank with the vent tube at the top of the tank. 49

50 9. Secure the rubber stopper with set screw. Take care not to strip threads by over tightening set screw 2. Install a short piece of fuel line and the fuel T to the fuel pick up tube. Note: Using a heat gun and or soapy water solution to soften the fuel line will help with the installation of the fuel T. Fuel Tank Installation 1. Gather the fuel tank parts as shown below. Fuel tank, fuel tubing, foam rubber, fuel T, fuel filler dot, fuel filter and nylon ties. Note: The fuel line, fuel T, fuel filter are not supplied, but are available through Aeroworks. 3. Install the fuel filter, fuel filler line and carburetor fuel line to the fuel tank. Be sure to leave enough fuel line to reach the engine carburetor and the filler dot. Note: It is recommended you always use a fuel filter in the fuel line to the carburetor. 50

51 4. Use small nylon ties to secure fuel line. Note: Gasoline will cause the fuel line to swell over time. Always secure fuel lines with nylon ties to prevent them from pulling off during flight. 6. Install foam rubber pad for fuel tank to rest on. Foam rubber will help prevent fuel from foaming or getting air bubbles from engine vibration 5. Unscrew and move retract control plate away from the tank mount as shown below. Thread nylon ties under tank mounting plate and center in position. 7. Install the fuel tank with the vent line towards the TOP of the fuse as shown below. 51

52 8. Attach the fuel line to the carburetor as shown. Use a small nylon tie to secure the hose to the carburetor. 10. Drill a hole in the bottom of the fuse to allow the vent line to exit as shown below. 9. Route the vent line on top of the fuel tank and secure with small nylon ties as shown. This will stop excess fuel from draining out the vent line during an extended down line or when lifting the tail. 11. Route the vent line out of the bottom of the fuse as shown below. Using rubber grommet for a professional finish. 52

53 12. Gather the fuel filler dot (supplied) and drill bits as shown below. 14. Glue the fuel filler dot mount in place using thick CA as shown below. Note: We recommend you start with a smaller size drill bit then increase the bit size to the correct size to fit your filler dot. This will help prevent the fuse side from splitting or cracking. 13. Mark and drill the location of the fuel filler dot. Note: The higher you mount the fuel fill dot the less fuel will siphon out when fueling. 15. Rout the fill line through the fuel dot mount and attach the fuel dot as shown. 16. Fuel filler dot installation is now complete. 53

54 Air Fill Valve Installation 1. Gather the air fill valve (supplied) as shown below. 3. Locate the yellow air fill valve line as shown below. 2. Use a 1/4 drill bit to drill the mounting hole for the air fill valve as shown below. Note: Air filler valve location is at the builders discretion. The recommended mounting location is shown below. 4. Use a heat gun to soften the air line as shown. This will allow the hose to slide onto the air valve easily. 54

55 5. Attach the hose the fill valve as shown below. 7. Use the mounting nut to securely fasten the air valve to the fuse side as shown below. 6. Mount fill valve from the backside as shown below. 55

56 Air Scoop Installation 1. Gather the air scoop, wing mounting bolts, wing bolt guide tubes, wing reinforcement discs and bottom fuse fillet as shown below. 3. Use a hobby knife to remove covering for wing reinforcement discs as shown below. Note: Nylon bolts shown in manual have been replaced with metal bolts and washers for extra strength. 2. Install wing with wing bolts and reinforcement discs, mark location of wing reinforcement discs as shown below. 4. Coat the bolt with Vaseline to prevent glue from sticking to bolt. 56

57 5. Apply 5 minute epoxy to wing reinforcement discs as shown below. 7. Locate the rear air scoop and mounting template as shown below. 6. Use wing mounting bolts to securely hold wing reinforcement discs in place as shown below. Allow the glue to fully cure before moving on. 8. Align rear scoop to fuselage and lightly mark position of air scoop onto the wing using a pen. This will be used to correctly align the mounting template. 57

58 9. Remove air scoop as shown below. 11. Finished marking pattern shown below. Note: Scoop alignment marks drawn on bottom of the wing. 10. Using alignment marks tape air scoop mounting template to the bottom of the wing as shown. Use a pen to mark the location of the template, both the inside and outside of the template will be marked. 12. Use a hobby knife to cut the covering away from the wing as shown below. Be careful not to cut into the underlying balsa as this can weaken the structure of the wing. 58

59 13. Use sand paper to roughen the gluing surface of the air scoop as shown. 15. Carefully position the air scoop onto the wing as shown making sure the air scoop is positioned correctly before the glue fully cures. 14. Apply thick CA on the bottom of the wing in the area cut out in a previous step. 16. Allow glue to fully cure before moving on. 59

60 17. Remove wing and gather the wing bolt guide tubes and slide them into the precut holes as shown below. 19. Mark guide tubes flush with top of air scoop. Remove guide tubes and use a saw or a rotary cutting tool to remove excess guide tube. Note: Mark guide tubes Right/Left to ensure correct installation. 18. It will be necessary to sand the tubes so they fit the taper of the wing and flush to the top of the reinforcement discs as shown below. 20. Place masking tape over holes and cut away tape from guide tube holes with a hobby knife. Note: Masking tape will help protect paint when sanding tubes flush to scoop. 60

61 21. Reinstall guide tubes and use a sanding bar to sand the guide tubes flush with the air scoop as shown. 23. From the inside use thick CA to glue the guide tubes in place as shown below. 22. Remove the masking tape from the air scoop. 24. Gather the bottom fuse fillet, thick CA, T Pin and sand paper as shown below. 61

62 25. Align fillet with fuse and mark the location of the bottom fuse fillet onto the wing. 27. Sand the mounting area of the fuse fillet as shown below. 26. Use a T-Pin to poke holes in the covering along the inside of the mounting line. This will allow the CA to bond securely with the wing. 28. Place a piece of suran wrap in the front portion of the wing saddle. Use a hobby knife to cut the wing dowel holes as shown. 62

63 29. Install the wing on the fuse, make sure the suran wrap covers the entire front portion of the wing mount. 31. Place the fuse fillet back onto the wing and allow the glue to dry. 30. Apply thick CA on the inside of the line marked in a previous step. 32. Wing air scoop and fuse fillet installation is now complete. 63

64 RADIO INSTALLATION 1. Gather the receiver, battery, switch, and regulator as shown below. 3. Reinstall the retract control plate using the 4 wood screws as shown below. 2. Install the receiver battery, receiver, and regulator using the supplied nylon ties and foam pad as shown below. 4. Be sure to allow easy access to the air line quick disconnects as shown. 64

65 5. Final radio installation shown below. 65

66 COWL INSTALLATION 1. Gather the following material for making a cowl cutout template. Hobby Knife, Ruler, Tape, Felt tip pen or marker 3. Cut the template material to 5 wide as shown below. This will allow the template to correctly fit on the cowl. Template material has been supplied. 2. Measure and mark the template material at 5 as shown below. 4. Refer back to page #36 Step #1 when we had you mark bottom of fuse. This alignment mark will be used at this time. 66

67 5. Tape template to fuse bottom transfer alignment marks onto template. Use masking tape to securely hold the template to the fuse. 7. Using a hobby knife cut out template for cylinder head. 6. Trace around the cylinder head of the motor being careful to keep the template in the same location. Note: Mark Cowl Side on template for easy reference when placing template on cowling 8. Reattach the template to fuse and check to see if the template lines up correctly and cut out for cylinder is correct. It may be necessary to make small adjustments to the cut out at this time. 67

68 9. Attach the muffler to the motor at this time. Leave the template attached to the fuse. 12. Dry fit template and check to see if the template lines up correctly. It may be necessary to make small adjustments to the cut out at this time. 10. Trace around the muffler exhaust stacks being careful to keep the template in the same location. 13. Once satisfied with fit remove template and align template with the panel line marks on cowl and template fit flush with rear of cowl. 11. Using a hobby knife cut out the template for the hot air exit and muffler stacks relief hole. 68

69 14. With alignment mark aligned and template fit flush to rear of cowl tape template to bottom of cowling as shown below Remove the template and use a rotary cutting tool and sanding drum to cut out the opening in the cowl. 17. Reinstall the cowl to check the fit of the cylinder head and muffler. Note: Be sure that the cylinder head and muffler will not rub against the cowl. Make adjustments as necessary. Note: We have found this to be adequate cooling for the DA 50. Depending on your engine s operating temperature, you may need to allow for more exit air for your engine to run at its recommended operating temperature. Always check the operating temperature of your engine to prevent any damage from occurring. Aeroworks is not responsible for damages incurred from improper engine cooling. 15. Mark cut lines with removable marker. Note: Take care and test painted areas prior to using any type of paint remover, rubbing alcohols or cleaners to remove any pen lines. 69

70 18. Finished cowl installation shown below. 70

71 Spinner and Prop Installation 1. Gather the following items as shown below. Spinner (supplied) Prop (not supplied) Drill jig guide (not supplied) Alignment bolt (not supplied) Wood spacer as shown below (not supplied) 3. Remove the spinner back plate from the nose cone as shown. Make certain holes are aligned correctly. 2. With spinner cone screwed to back plate mark the location of the prop cutouts onto the back plate as shown below. 4. Place a propeller drill jig onto the back side of the back plate as shown. Note: Install the drill jig onto the back of the spinner back plate. 71

72 5. Use a bolt, and plywood spacer to securely fasten the drill guide to the back plate as shown. 7. Use a drill press to drill the holes through back plate for the prop bolts as shown. Take your time on this step, it is very important that the holes are drilled correctly. 6. Tighten the bolt as shown below, this will insure the drill jig will not move during the drilling process. Make sure the drill jig is positioned as shown below. This will ensure the prop is in the correct position for starting. 8. After the back plate has been drilled attach the prop as shown. Ensure that the drill guide has not moved from its original position. 72

73 9. Align the prop between the two marks made in a previous step. This will ensure that the prop lines up correctly with the spinner. 11. Slide the nose cone over the prop and onto the back plate as shown. 10. Use two of the prop mounting bolts to help keep the spinner back plate from becoming misaligned. 12. Install the nose cone mounting bolts as shown below. 73

74 13. Check and make sure that the prop does not come in contact with the spinner. If it does use a dremel tool to remove the material around the opening of the nose cone. 15. Using a drill press drill through the drill jig guide and back plate and into the prop. This will keep the prop aligned with the back plate. 14. Remove the nose cone as shown below. Ensure that the drill guide has not moved from its original position. 16. Make a reference mark on both the prop and back plate to help realign the prop. 74

75 17. Install the prop and spinner using the prop mounting bolts included with your engine. 18. Spinner and prop installation are now complete. 75

76 DECAL INSTALLATION Decals Available through Aeroworks 1. Placement of OPTIONAL decal package shown, included decals will differ. 2. Placement of OPTIONAL decal package shown, included decals will differ. 76

77 PRE-FLIGHT PREPARATION 1. Mount the cowl using the cowl mounting bolts. 3. Secure bottom wing to fuse with bolt. Note: Metal bolt and washer are supplied for wing mounting. 2. Connect aileron extensions, flap extensions, and air lines to their respective positions in the fuse and wing. Use an Aeroworks Safety Clip to ensure the plugs will not come apart from vibration or light tension. 4. Tighten the wing mount bolt as shown. Over tightening of bolt can damage threads or break bolt or strip blind nut. 77

78 5. Slide the stab tubes in the fuse stab tube sleeves (short tube front, long tube rear). Slide the stabs on the stab tube and plug in the elevator servo connectors. Secure elevator extension at this time, us and Aeroworks safety clip to keep the connector from loosening in flight. 7. Close the canopy by closing the top hatch followed by the side hatch as shown below. 6. Slide the rubber backed washers on the stab mounting bolts and insert bolts through the stab mounting tabs and into the fuse blind nuts. Tighten snugly but do not over tighten and crack the stab mounting tabs or the fuse sides. 8. Secure the top and side of the canopy with two Phillips head screws. Please note that canopy comes in the closed position with screws installed from the factory. These screws must be in place in order to fly the airplane, flying without these screws may result in failure. If you do not remove your stabs for transportation purposes. We recommend you use (blue) Loctite to help keep bolts from vibrating loose. We recommend checking the stab mounting bolts after each flying session 78

79 Drop Tanks and Drop Bombs Installation 1. Gather the drop tanks or drop bombs, mounting bolts, mounting pylons, and pylon mounting bolts. 3. Tighten mounting bolts to the blind nuts preinstalled in the wing as shown. It may be necessary to use blue loctite on these bolts to prevent them from loosening during flight. 2. Place the 4-40 mounting bolts into the mounting pylons as shown below. 4. Tighten the 4-40 bolt securing drop tank/bomb as shown. Note: It is recommended that the drop tanks/bombs be left off for the initial test flights. 79

80 CENTER OF GRAVITY Center of Gravity 2 3/4 Back Measured From the Wings Leading Edge at the Wing Tip 3. Start at recommended CG until you are comfortable with the flight characteristics of the aircraft. You may find this a bit nose heavy at first but that is fine to start with. After you are comfortable adjust the CG to suit your flying style in small steps, especially when shifting the CG toward the tail. Move the battery or add small stick on weights to the nose or tail as necessary. 2. Balance the 50cc P-51B Mustang ARF-QB without fuel in the tank with the batteries installed and ready to fly with gear retracted. The engine, radio, servos, and battery you use will determine the final weight and locations of equipment. Try to balance the model by moving the battery and receiver before adding any ballast. 80

81 CONTROL THROWS 1. The amount of control throw should be adjusted using mechanical means as much as possible and then electronically with the radio. The control throws are shown in degrees and inches of deflection measured at the widest point of the control surface for both low and high rates. 4. Location for throw meter to measure Flap throw in degrees. 2. Use the supplied flight control deflection meter to measure the throws in degrees. Prop up the tail of the aircraft until the fuselage is parallel to the table top. 5. Location for throw meter to measure Elevator throw in degrees. 3. Location for throw meter to measure Aileron throw in degrees. 81

82 6. Measure the rudder deflection in inches from bottom of the rudder 82